src/mm_camcorder_resource.c

   1 /*
   2  * libmm-camcorder
   3  *
   4  * Copyright (c) 2000 - 2011 Samsung Electronics Co., Ltd. All rights reserved.
   5  *
   6  * Licensed under the Apache License, Version 2.0 (the "License");
   7  * you may not use this file except in compliance with the License.
   8  * You may obtain a copy of the License at
   9  *
  10  * http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  *
  18  */
  19
  20 #include "mm_camcorder_internal.h"
  21 #include "mm_camcorder_resource.h"
  22 #include <murphy/common/glib-glue.h>
  23
  24 #define MRP_APP_CLASS_FOR_CAMCORDER   "media"
  25 #define MRP_RESOURCE_TYPE_MANDATORY TRUE
  26 #define MRP_RESOURCE_TYPE_EXCLUSIVE FALSE
  27
  28 const char* mm_camcorder_resource_str[MM_CAMCORDER_RESOURCE_MAX] = {
  29         "camera",
  30         "video_overlay"
  31 };
  32
  33 #define MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(x_camcorder_resource_manager) \
  34 do { \
  35         if (!x_camcorder_resource_manager) { \
  36                 _mmcam_dbg_err("no resource manager instance"); \
  37                 return MM_ERROR_INVALID_ARGUMENT; \
  38         } \
  39 } while (0);
  40
  41 #define MMCAMCORDER_CHECK_CONNECTION_RESOURCE_MANAGER(x_camcorder_resource_manager) \
  42 do { \
  43         if (!x_camcorder_resource_manager) { \
  44                 _mmcam_dbg_err("no resource manager instance"); \
  45                 return MM_ERROR_INVALID_ARGUMENT; \
  46         } else { \
  47                 if (!x_camcorder_resource_manager->is_connected) { \
  48                         _mmcam_dbg_err("not connected to resource server yet"); \
  49                         return MM_ERROR_RESOURCE_NOT_INITIALIZED; \
  50                 } \
  51         } \
  52 } while (0);
  53
  54 static char *__mmcamcorder_resource_state_to_str(mrp_res_resource_state_t st)
  55 {
  56         char *state = "unknown";
  57         switch (st) {
  58         case MRP_RES_RESOURCE_ACQUIRED:
  59                 state = "acquired";
  60                 break;
  61         case MRP_RES_RESOURCE_LOST:
  62                 state = "lost";
  63                 break;
  64         case MRP_RES_RESOURCE_AVAILABLE:
  65                 state = "available";
  66                 break;
  67         case MRP_RES_RESOURCE_PENDING:
  68                 state = "pending";
  69                 break;
  70         case MRP_RES_RESOURCE_ABOUT_TO_LOOSE:
  71                 state = "about to loose";
  72                 break;
  73         }
  74         return state;
  75 }
  76
  77 static void __mmcamcorder_resource_state_callback(mrp_res_context_t *context, mrp_res_error_t err, void *user_data)
  78 {
  79         int i = 0;
  80         const mrp_res_resource_set_t *rset;
  81         mrp_res_resource_t *resource;
  82         mmf_camcorder_t* camcorder = NULL;
  83
  84         camcorder = (mmf_camcorder_t*)user_data;
  85
  86         mmf_return_if_fail((MMHandleType)camcorder);
  87         mmf_return_if_fail(context);
  88
  89         _mmcam_dbg_warn("enter - state %d", context->state);
  90
  91         _MMCAMCORDER_LOCK_RESOURCE(camcorder);
  92
  93         switch (context->state) {
  94         case MRP_RES_CONNECTED:
  95                 _mmcam_dbg_warn(" - connected to Murphy");
  96                 if ((rset = mrp_res_list_resources(context)) != NULL) {
  97                         mrp_res_string_array_t *resource_names;
  98                         resource_names = mrp_res_list_resource_names(rset);
  99                         if (!resource_names) {
 100                                 _mmcam_dbg_err(" - no resources available");
 101                                 _MMCAMCORDER_UNLOCK_RESOURCE(camcorder);
 102                                 return;
 103                         }
 104                         for (i = 0; i < resource_names->num_strings; i++) {
 105                                 resource = mrp_res_get_resource_by_name(rset, resource_names->strings[i]);
 106                                 if (resource)
 107                                         _mmcam_dbg_warn(" - available resource: %s", resource->name);
 108                         }
 109                         mrp_res_free_string_array(resource_names);
 110                 }
 111                 camcorder->resource_manager.is_connected = TRUE;
 112                 _MMCAMCORDER_RESOURCE_SIGNAL(camcorder);
 113                 break;
 114         case MRP_RES_DISCONNECTED:
 115                 _mmcam_dbg_err(" - disconnected from Murphy : stop camera");
 116
 117                 if (camcorder->resource_manager.rset) {
 118                         mrp_res_delete_resource_set(camcorder->resource_manager.rset);
 119                         camcorder->resource_manager.rset = NULL;
 120                 }
 121
 122                 if (camcorder->resource_manager.context) {
 123                         mrp_res_destroy(camcorder->resource_manager.context);
 124                         camcorder->resource_manager.context = NULL;
 125                         camcorder->resource_manager.is_connected = FALSE;
 126                 }
 127
 128                 _MMCAMCORDER_LOCK_ASM(camcorder);
 129
 130                 /* set value to inform a status is changed by resource manaer */
 131                 camcorder->state_change_by_system = _MMCAMCORDER_STATE_CHANGE_BY_RM;
 132
 133                 /* Stop the camera */
 134                 __mmcamcorder_force_stop(camcorder);
 135
 136                 /* restore value */
 137                 camcorder->state_change_by_system = _MMCAMCORDER_STATE_CHANGE_NORMAL;
 138
 139                 _MMCAMCORDER_UNLOCK_ASM(camcorder);
 140                 break;
 141         }
 142
 143         _MMCAMCORDER_UNLOCK_RESOURCE(camcorder);
 144
 145         _mmcam_dbg_warn("leave");
 146
 147         return;
 148 }
 149
 150
 151 static void __mmcamcorder_resource_set_state_callback(mrp_res_context_t *cx, const mrp_res_resource_set_t *rs, void *user_data)
 152 {
 153         int i = 0;
 154         mmf_camcorder_t *camcorder = (mmf_camcorder_t *)user_data;
 155         mrp_res_resource_t *res;
 156
 157         mmf_return_if_fail((MMHandleType)camcorder);
 158
 159         _MMCAMCORDER_LOCK_RESOURCE(camcorder);
 160
 161         if (!mrp_res_equal_resource_set(rs, camcorder->resource_manager.rset)) {
 162                 _mmcam_dbg_warn("- resource set(%p) is not same as this camcorder handle's(%p)", rs, camcorder->resource_manager.rset);
 163                 _MMCAMCORDER_UNLOCK_RESOURCE(camcorder);
 164                 return;
 165         }
 166
 167         _mmcam_dbg_log(" - resource set state of camcorder(%p) is changed to [%s]",
 168                 camcorder, __mmcamcorder_resource_state_to_str(rs->state));
 169
 170         for (i = 0; i < MM_CAMCORDER_RESOURCE_MAX; i++) {
 171                 res = mrp_res_get_resource_by_name(rs, mm_camcorder_resource_str[i]);
 172                 if (res == NULL) {
 173                         _mmcam_dbg_warn(" -- %s not present in resource set", mm_camcorder_resource_str[i]);
 174                 } else {
 175                         _mmcam_dbg_warn(" -- resource name [%s] -> [%s]",
 176                                 res->name, __mmcamcorder_resource_state_to_str(res->state));
 177
 178                         if (res->state == MRP_RES_RESOURCE_ACQUIRED) {
 179                                 camcorder->resource_manager.acquire_remain--;
 180
 181                                 if (camcorder->resource_manager.acquire_remain <= 0) {
 182                                         _mmcam_dbg_warn("send signal - resource acquire done");
 183                                         _MMCAMCORDER_RESOURCE_SIGNAL(camcorder);
 184                                 } else {
 185                                         _mmcam_dbg_warn("remained acquire count %d",
 186                                                 camcorder->resource_manager.acquire_remain);
 187                                 }
 188                         } else if (res->state == MRP_RES_RESOURCE_LOST) {
 189                                 camcorder->resource_manager.acquire_remain++;
 190
 191                                 if (camcorder->resource_manager.acquire_remain >= camcorder->resource_manager.acquire_count) {
 192                                         _mmcam_dbg_warn("resource release done");
 193
 194                                         if (camcorder->state > MM_CAMCORDER_STATE_NULL) {
 195                                                 _mmcam_dbg_warn("send resource signal");
 196                                                 _MMCAMCORDER_RESOURCE_SIGNAL(camcorder);
 197                                         } else {
 198                                                 _mmcam_dbg_warn("skip resource signal - state %d", camcorder->state);
 199                                         }
 200                                 } else {
 201                                         _mmcam_dbg_warn("acquired %d, lost %d",
 202                                                 camcorder->resource_manager.acquire_count,
 203                                                 camcorder->resource_manager.acquire_remain);
 204                                 }
 205                         }
 206                 }
 207         }
 208
 209         mrp_res_delete_resource_set(camcorder->resource_manager.rset);
 210         camcorder->resource_manager.rset = mrp_res_copy_resource_set(rs);
 211
 212         _MMCAMCORDER_UNLOCK_RESOURCE(camcorder);
 213
 214         return;
 215 }
 216
 217
 218 static void __mmcamcorder_resource_release_cb(mrp_res_context_t *cx, const mrp_res_resource_set_t *rs, void *user_data)
 219 {
 220         int i = 0;
 221         int current_state = MM_CAMCORDER_STATE_NONE;
 222         mmf_camcorder_t* camcorder = (mmf_camcorder_t*)user_data;
 223         mrp_res_resource_t *res;
 224
 225         mmf_return_if_fail((MMHandleType)camcorder);
 226
 227         current_state = _mmcamcorder_get_state((MMHandleType)camcorder);
 228         if (current_state <= MM_CAMCORDER_STATE_NONE ||
 229             current_state >= MM_CAMCORDER_STATE_NUM) {
 230                 _mmcam_dbg_err("Abnormal state. Or null handle. (%p, %d)", camcorder, current_state);
 231                 return;
 232         }
 233
 234         _mmcam_dbg_warn("enter");
 235
 236         _MMCAMCORDER_LOCK_RESOURCE(camcorder);
 237
 238         if (!mrp_res_equal_resource_set(rs, camcorder->resource_manager.rset)) {
 239                 _MMCAMCORDER_UNLOCK_RESOURCE(camcorder);
 240                 _mmcam_dbg_warn("- resource set(%p) is not same as this camcorder handle's(%p)", rs, camcorder->resource_manager.rset);
 241                 return;
 242         }
 243
 244         /* set flag for resource release callback */
 245         camcorder->resource_release_cb_calling = TRUE;
 246
 247         _mmcam_dbg_log(" - resource set state of camcorder(%p) is changed to [%s]",
 248                 camcorder, __mmcamcorder_resource_state_to_str(rs->state));
 249
 250         for (i = 0; i < MM_CAMCORDER_RESOURCE_MAX; i++) {
 251                 res = mrp_res_get_resource_by_name(rs, mm_camcorder_resource_str[i]);
 252                 if (res == NULL) {
 253                         _mmcam_dbg_warn(" -- %s not present in resource set", mm_camcorder_resource_str[i]);
 254                 } else {
 255                         _mmcam_dbg_warn(" -- resource name [%s] -> [%s]", res->name, __mmcamcorder_resource_state_to_str(res->state));
 256                 }
 257         }
 258
 259         _MMCAMCORDER_UNLOCK_RESOURCE(camcorder);
 260
 261         _MMCAMCORDER_LOCK_ASM(camcorder);
 262
 263         /* set value to inform a status is changed by resource manager */
 264         camcorder->state_change_by_system = _MMCAMCORDER_STATE_CHANGE_BY_RM;
 265
 266         /* Stop the camera */
 267         __mmcamcorder_force_stop(camcorder);
 268
 269         /* restore value */
 270         camcorder->state_change_by_system = _MMCAMCORDER_STATE_CHANGE_NORMAL;
 271
 272         _MMCAMCORDER_UNLOCK_ASM(camcorder);
 273
 274         _MMCAMCORDER_LOCK_RESOURCE(camcorder);
 275
 276         /* restore flag for resource release callback */
 277         camcorder->resource_release_cb_calling = FALSE;
 278
 279         _MMCAMCORDER_UNLOCK_RESOURCE(camcorder);
 280
 281         _mmcam_dbg_warn("leave");
 282
 283         return;
 284 }
 285
 286 int _mmcamcorder_resource_create_resource_set(MMCamcorderResourceManager *resource_manager)
 287 {
 288         if (resource_manager->rset) {
 289                 _mmcam_dbg_warn(" - resource set was already created, delete it");
 290                 mrp_res_delete_resource_set(resource_manager->rset);
 291                 resource_manager->rset = NULL;
 292         }
 293
 294         resource_manager->rset = mrp_res_create_resource_set(resource_manager->context,
 295                 MRP_APP_CLASS_FOR_CAMCORDER, __mmcamcorder_resource_set_state_callback, (void*)resource_manager->user_data);
 296
 297         if (resource_manager->rset == NULL) {
 298                 _mmcam_dbg_err(" - could not create resource set");
 299                 return MM_ERROR_RESOURCE_INTERNAL;
 300         }
 301
 302         if (!mrp_res_set_autorelease(TRUE, resource_manager->rset))
 303                 _mmcam_dbg_warn(" - could not set autorelease flag!");
 304
 305         _mmcam_dbg_log("done");
 306
 307         return MM_ERROR_NONE;
 308 }
 309
 310 static int __mmcamcorder_resource_include_resource(MMCamcorderResourceManager *resource_manager, const char *resource_name)
 311 {
 312         mrp_res_resource_t *resource = NULL;
 313         resource = mrp_res_create_resource(resource_manager->rset,
 314                 resource_name,
 315                 MRP_RESOURCE_TYPE_MANDATORY,
 316                 MRP_RESOURCE_TYPE_EXCLUSIVE);
 317         if (resource == NULL) {
 318                 _mmcam_dbg_err(" - could not include resource[%s]", resource_name);
 319                 return MM_ERROR_RESOURCE_INTERNAL;
 320         }
 321
 322         resource_manager->acquire_count++;
 323         resource_manager->acquire_remain = resource_manager->acquire_count;
 324
 325         _mmcam_dbg_log(" - count[%d] include resource[%s]",
 326                 resource_manager->acquire_count, resource_name);
 327
 328         return MM_ERROR_NONE;
 329 }
 330
 331 static int __mmcamcorder_resource_set_release_cb(MMCamcorderResourceManager *resource_manager)
 332 {
 333         int ret = MM_ERROR_NONE;
 334         bool mrp_ret = FALSE;
 335
 336         if (resource_manager->rset) {
 337                 mrp_ret = mrp_res_set_release_callback(resource_manager->rset, __mmcamcorder_resource_release_cb, resource_manager->user_data);
 338                 if (!mrp_ret) {
 339                         _mmcam_dbg_err(" - could not set release callback");
 340                         ret = MM_ERROR_RESOURCE_INTERNAL;
 341                 }
 342         } else {
 343                 _mmcam_dbg_err(" - resource set is null");
 344                 ret = MM_ERROR_RESOURCE_INVALID_STATE;
 345         }
 346
 347         return ret;
 348 }
 349
 350 int _mmcamcorder_resource_manager_init(MMCamcorderResourceManager *resource_manager, void *user_data)
 351 {
 352         GMainContext *mrp_ctx = NULL;
 353         GMainLoop *mrp_loop = NULL;
 354
 355         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 356
 357         _mmcam_dbg_warn("start");
 358
 359         mrp_ctx = g_main_context_new();
 360         if (!mrp_ctx) {
 361                 _mmcam_dbg_err("failed to get create glib context for mrp");
 362                 return MM_ERROR_RESOURCE_INTERNAL;
 363         }
 364
 365         mrp_loop = g_main_loop_new(mrp_ctx, TRUE);
 366
 367         g_main_context_unref(mrp_ctx);
 368         mrp_ctx = NULL;
 369
 370         if (!mrp_loop) {
 371                 _mmcam_dbg_err("failed to get create glib loop for mrp");
 372                 return MM_ERROR_RESOURCE_INTERNAL;
 373         }
 374
 375         resource_manager->mloop = mrp_mainloop_glib_get(mrp_loop);
 376
 377         g_main_loop_unref(mrp_loop);
 378         mrp_loop = NULL;
 379
 380         if (!resource_manager->mloop) {
 381                 _mmcam_dbg_err("failed to get mainloop for mrp");
 382                 return MM_ERROR_RESOURCE_INTERNAL;
 383         }
 384
 385         _mmcam_dbg_warn("mloop %p", resource_manager->mloop);
 386
 387         resource_manager->context = mrp_res_create(resource_manager->mloop, __mmcamcorder_resource_state_callback, user_data);
 388         if (!resource_manager->context) {
 389                 _mmcam_dbg_err("could not get context for mrp");
 390
 391                 mrp_mainloop_destroy(resource_manager->mloop);
 392                 resource_manager->mloop = NULL;
 393
 394                 return MM_ERROR_RESOURCE_INTERNAL;
 395         }
 396
 397         resource_manager->user_data = user_data;
 398
 399         _mmcam_dbg_log("done");
 400
 401         return MM_ERROR_NONE;
 402 }
 403
 404 int _mmcamcorder_resource_manager_prepare(MMCamcorderResourceManager *resource_manager, MMCamcorderResourceType resource_type)
 405 {
 406         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 407         MMCAMCORDER_CHECK_CONNECTION_RESOURCE_MANAGER(resource_manager);
 408
 409         return __mmcamcorder_resource_include_resource(resource_manager, mm_camcorder_resource_str[resource_type]);
 410 }
 411
 412 int _mmcamcorder_resource_manager_acquire(MMCamcorderResourceManager *resource_manager)
 413 {
 414         int ret = MM_ERROR_NONE;
 415         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 416         MMCAMCORDER_CHECK_CONNECTION_RESOURCE_MANAGER(resource_manager);
 417
 418         if (resource_manager->rset == NULL) {
 419                 _mmcam_dbg_err("- could not acquire resource, resource set is null");
 420                 ret = MM_ERROR_RESOURCE_INVALID_STATE;
 421         } else {
 422                 ret = __mmcamcorder_resource_set_release_cb(resource_manager);
 423                 if (ret) {
 424                         _mmcam_dbg_err("- could not set resource release cb, ret(%d)", ret);
 425                         ret = MM_ERROR_RESOURCE_INTERNAL;
 426                 } else {
 427                         ret = mrp_res_acquire_resource_set(resource_manager->rset);
 428                         if (ret) {
 429                                 _mmcam_dbg_err("- could not acquire resource, ret(%d)", ret);
 430                                 ret = MM_ERROR_RESOURCE_INTERNAL;
 431                         }
 432                 }
 433         }
 434
 435         return ret;
 436 }
 437
 438 int _mmcamcorder_resource_manager_release(MMCamcorderResourceManager *resource_manager)
 439 {
 440         int ret = MM_ERROR_NONE;
 441         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 442         MMCAMCORDER_CHECK_CONNECTION_RESOURCE_MANAGER(resource_manager);
 443
 444         if (resource_manager->rset == NULL) {
 445                 _mmcam_dbg_err("- could not release resource, resource set is null");
 446                 ret = MM_ERROR_RESOURCE_INVALID_STATE;
 447         } else {
 448                 if (resource_manager->rset->state != MRP_RES_RESOURCE_ACQUIRED) {
 449                         _mmcam_dbg_err("- could not release resource, resource set state is [%s]",
 450                                 __mmcamcorder_resource_state_to_str(resource_manager->rset->state));
 451                         ret = MM_ERROR_RESOURCE_INVALID_STATE;
 452                 } else {
 453                         ret = mrp_res_release_resource_set(resource_manager->rset);
 454                         if (ret) {
 455                                 _mmcam_dbg_err("- could not release resource, ret(%d)", ret);
 456                                 ret = MM_ERROR_RESOURCE_INTERNAL;
 457                         } else {
 458                                 _mmcam_dbg_log("resource release done");
 459                         }
 460                 }
 461         }
 462
 463         return ret;
 464 }
 465
 466
 467 int _mmcamcorder_resource_manager_deinit(MMCamcorderResourceManager *resource_manager)
 468 {
 469         MMCAMCORDER_CHECK_RESOURCE_MANAGER_INSTANCE(resource_manager);
 470
 471         _mmcam_dbg_warn("rset %p, context %p, mloop %p",
 472                 resource_manager->rset, resource_manager->context, resource_manager->mloop);
 473
 474         if (resource_manager->rset) {
 475                 if (resource_manager->rset->state == MRP_RES_RESOURCE_ACQUIRED) {
 476                         _mmcam_dbg_warn("resource is still acquired. release...");
 477                         if (mrp_res_release_resource_set(resource_manager->rset))
 478                                 _mmcam_dbg_err("- could not release resource");
 479                 }
 480
 481                 _mmcam_dbg_warn("delete resource set");
 482
 483                 mrp_res_delete_resource_set(resource_manager->rset);
 484                 resource_manager->rset = NULL;
 485         }
 486
 487         if (resource_manager->context) {
 488                 _mmcam_dbg_warn("destroy resource context");
 489
 490                 mrp_res_destroy(resource_manager->context);
 491                 resource_manager->context = NULL;
 492         }
 493
 494         if (resource_manager->mloop) {
 495                 _mmcam_dbg_warn("destroy resource mainloop");
 496
 497                 mrp_mainloop_quit(resource_manager->mloop, 0);
 498                 mrp_mainloop_destroy(resource_manager->mloop);
 499                 resource_manager->mloop = NULL;
 500         }
 501
 502         _mmcam_dbg_warn("done");
 503
 504         return MM_ERROR_NONE;
 505 }